In the Safari 2.0.1 thread, where you find information about the Safari 2.0.1 upgrade, and where questions about Safari 2.0.1 should be asked, there were some mentioning of Saft being broken, but that it was easily fixed by changing the version number to 412.5 in the Saft plist. Don't know about PitHelmet.
Taboo and AcidSearch works just fine.